题干
I don't think they would believe her, _________?
A：do I
B：would they
C：wouldn't they
D：should I
答案(点此获取答案解析）
B
I don't think they would believe her, _________?
A：do I
B：would they
C：wouldn't they
D：should I
若函数
的图象关于直线
对称，则
的值为（ ）